In an old fable by Aesop, a hungry fox noticed a bunch of juicy grapes hanging from a vine. After several failed attempts to reach the grapes, the fox gave up and insisted that he didn't want them anyway because they were probably sour.

Nowadays when somebody expresses sour grapes, it means that they put down something simply because they can't have it.

The phrase is often used incorrectly as another way to express bitterness or resentment.

In the old fable by Aesop, a hungry fox noticed a bunch of juicy grapes hanging from a vine. After several failed attempts to reach the grapes, the fox gave up and insisted that he didn't want them anyway because they were probably sour.

Making several attempts to get a girl you want, getting rejected by that girl, then you realizing somewhere down the line that you dont want her because shes probably sour